Magnetic suspension bearing rotor structure, motor and air conditioner

Abstract

The invention relates to a magnetic suspension bearing rotor structure. The magnetic suspension bearing rotor structure comprises a rotary shaft assembly, and the rotary shaft assembly is sleeved witha rotor pack in a matched mode; a circumferential limiting structure is arranged between the outer side of the rotary shaft assembly and the inner circle of the rotor pack and comprises a positioninggroove and a positioning protrusion capable of being embedded into the positioning groove in a mutually-matched mode; the two sides of the positioning protrusion are matched with the two sides of thepositioning groove; the lengths of the two ends of the positioning protrusion are smaller than the lengths of the two ends of the positioning groove; and after the positioning protrusion is embeddedinto the positioning groove, a cooling flow pass is formed between the end face of the positioning protrusion and the positioning groove. A cooling medium can pass through the cooling flow pass to achieve the cooling effect, the working property of the magnetic suspension bearing rotor structure is prevented from being lowered, the rotor pack and the rotary shaft assembly are prevented from rotating relatively, and the magnitude of interference of the rotor pack and the rotary shaft assembly can be decreased to improve safety. The invention further provides the motor with the magnetic suspension bearing rotor structure, and an air conditioner.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a magnetic suspension bearing rotor structure; and also provides a motor and an air conditioner with the magnetic suspension bearing rotor structure. Background technique [0002] The magnetic suspension bearing rotor is a part of the magnetic suspension bearing, and is mostly assembled on the main shaft. It cooperates with the magnetic suspension bearing stator, so that the rotor and the main shaft are suspended in the middle position. Since the working principle of the magnetic suspension bearing is that the magnetic suspension bearing stator coil generates magnetic flux after it is energized, from the bearing stator core, the bearing rotor, and then back to the bearing stator core to form a loop, so the magnetic suspension bearing rotor is usually used with good magnetic performance. On the other hand, in order to reduce iron loss, magnetic material laminations are usually used...

AI Technical Summary

Problems solved by technology

Compared with the original technology, the assembly process is simplified, and the figure 1 Compared with the technology shown, there is still a large amount of interference, the equivalent stress of the parts is too large, and there is a risk of bursting at high speeds

At the same time, during the working process of the magnetic suspension bearing, the rotor laminations will heat up and expand, which may also cause relative rotation between the rotor laminations and the collar, thereby causing the risk of the magnetic suspension bearing rotor becoming loose.

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